A Healthy Spaghetti Squash Casserole Recipe that is SO easy and delicious. Simple ingredients get baked in the oven for a quick meal everyone will love!

Spaghetti Squash Casserole on a white plate with a second dish and casserole dish off to the side

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Spaghetti squash is one of our favorite things to cook with, an using it up in a casserole is just SO delicious!

Many casseroles are loaded with creamy soups or tons of carbs from rice and potatoes. This spaghetti squash casserole is super light and tasty. Lower in carbs, low in fat and protein packed (30g+ per serving!)

A close up of Healthy Spaghetti Squash Casserole on a white plate on a grey background

This cheesy spaghetti squash casserole is the perfect dinner for a busy weeknight or if you’re looking for something to meal prep!

Why we love this Spaghetti Squash Casserole Recipe

This spaghetti squash casserole is one of our favorite meals for a few reasons.

  • Hearty while being low calorie: This casserole has a super hearty feel to it while still being low calorie. It feels like a classic casserole but is secretly veggie loaded and high in protein
  • High Protein: This casserole has over 30g of protein per serving
  • Easy to make: You do need to prep the chicken and spaghetti squash but it’s totally worth the extra steps. Beyond that you just have to mix everything together and bake!

Baked Spaghetti Squash Casserole Ingredients

To make this Southwest Spaghetti Squash Casserole you’ll need:

Baked Spaghetti Squash Casserole Ingredients in small white bowls

How to Select and Prepare Spaghetti Squash

Selecting a spaghetti squash: Make sure your spaghetti squash is hard and has no soft spots.

Cooking Spaghetti Squash: Here is a post on how to cook spaghetti squash in the microwave and here is a post about how to cook spaghetti squash in the instant pot. Both methods take about 10 minutes.

a collage with step by step instructions showing how to cook spaghetti squash in the instant pot
  1. Slice spaghetti squash, put in your instant pot with 1 cup of water.
  2. Cover + set pot to sealing for 5 minutes.
  3. Manually release the pressure + shred your cooked squash with a fork!

P.S. – if you love spaghetti squash, you have to try these 25 Low Carb / Keto Spaghetti Squash Recipes

How To Make Spaghetti Squash Casserole Recipe

  1. Cook your spaghetti squash and chicken
  2. In a bowl, add shredded spaghetti squash, enchilada sauce, shredded chicken, beans, corn, green chiles.
  3. Mix all ingredients until combined + place in a greased 9×13 oven safe baking dish. Top with cheddar cheese.
  4. Bake at 400 for 20 minutes until the top starts to brown.



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